B virus infection is exceedingly uncommon, but if not treated quickly, it may cause serious brain damage or death. This virus is usually detected in the saliva, feces (poop), urine (pee), and brain or spinal cord tissue of macaque monkeys. The virus might also be found in lab-grown cells from infected monkeys. The B virus may survive on surfaces for hours, particularly if they are moist.
Moreover, individuals are often infected with the B virus if they are scratched, bitten, or come into contact with an infected macaque monkey’s mouth, nose, or eyes. One incidence of an infected individual transmitting the B virus to another person has been recorded.